Fixed point conversions of few files.

Fixed point conversions of files entropy_decoder.c, ivas_stereo_eclvq_dec.c, ivas_sns_com.c, ivas_stereo_eclvq_com.c\

[x] data type and operator changes in entropy_decoder.c.
[x] res_bpf_adapt() converted to fixed point implementation.
[x] ivas_stereo_eclvq_dec.c - BASOP updates.
[x] functions present in ivas_sns_com.c converted to fixed point.
[x] functions present in ivas_stereo_eclvq_com.c converted to fixed point.
Absolute diff of dumps
for, res_buf: 0.007217%
for, res_global_gain: 0.009206%
[x] Fixed warnings in ivas_qmetadata_dec functions and integrated ivas_omasa_decode_masa_to_total_fx function call.\

Testing:
[x] Decoder pytest results: 436 failed, 133 passed, 381 skipped.
[x] MLD test results: 9 files have MLD higher than threshold.
To be debugged. 3GPP MLD test seems to be including few additional cases which are not covered in internal MLD.